. "{[-4-Methoxybuta-1,3-dien-2-yl]oxy}trimethylsilane"@en . "Danishefsky's diene (Kitahara diene) is an organosilicon compound and a diene with the formal name trans-1-methoxy-3-trimethylsilyloxy-buta-1,3-diene named after Samuel J. Danishefsky. Because the diene is very electron-rich it is a very reactive reagent in Diels-Alder reactions. This diene reacts rapidly with electrophilic alkenes, such as maleic anhydride. The methoxy group promotes highly regioselective additions. The diene is known to react with amines, aldehydes, alkenes and alkynes. Reactions with imines and nitro-olefins have been reported."@en . . "7067238"^^ . . "Danishefsk\u00E9ho dien (tak\u00E9 naz\u00FDvan\u00FD Kitahar\u016Fv dien, systematick\u00FD n\u00E1zev trans-1-methoxy-3-trimethylsilyloxybuta-1,3-dien) je organick\u00E1 slou\u010Denina k\u0159em\u00EDku pat\u0159\u00EDc\u00ED mezi dieny; objevil ji , po kter\u00E9m je tak\u00E9 pojmenov\u00E1na. Jeliko\u017E m\u00E1 dien vysokou elektronovou hustotu, tak je zna\u010Dn\u011B reaktivn\u00ED p\u0159i Dielsov\u00FDch\u2013Alderov\u00FDch reakc\u00EDch. Prudce reaguje s elektrofiln\u00EDmi alkeny jako je maleinanhydrid. D\u00EDky methoxyskupin\u011B jsou adice velmi regioselektivn\u00ED. Tato l\u00E1tka reaguje s aminy, aldehydy, alkeny a alkyny. Byly tak\u00E9 pops\u00E1ny jej\u00ED reakce s iminy a nitroalkeny. Poprv\u00E9 byl tento dien p\u0159ipraven reakc\u00ED trimethylsilylchloridu s 4-methoxy-but-3-en-2-onem a chloridem zine\u010Dnat\u00FDm: Danishefsk\u00E9ho dien L\u00E1tka je zaj\u00EDmav\u00E1 d\u00EDky dv\u011Bma sv\u00FDm vlastnostem: substituenty zp\u016Fsobuj\u00ED regiospecifickou adici na nesymetrick\u00E9 dienofily a u vznikl\u00E9ho produktu mohou nav\u00EDc po adici prob\u011Bhnout dal\u0161\u00ED reakce. P\u0159i reakc\u00EDch s nesymetrick\u00FDmi alkeny doch\u00E1z\u00ED k vysok\u00E9 regioselektivit\u011B, p\u0159i\u010Dem\u017E je up\u0159ednost\u0148ov\u00E1na poloha 1,2 etherov\u00E9 skupiny vzhledem k alkenov\u00E9mu uhl\u00EDku (na kter\u00E9m je n\u00EDzk\u00E1 elektronov\u00E1 hustota). V\u0161e je zn\u00E1zorn\u011Bno na n\u00E1sleduj\u00EDc\u00EDm sch\u00E9matu aza Dielsovy\u2013Alderovy reakce: Danishefsk\u00E9ho dien p\u0159i aza Dielsov\u011B\u2013Alderov\u011B reakci U produktu cykloadice je silylether tvorby karbonylov\u00E9 skupiny z enolu. Methoxyskupina snadno podl\u00E9h\u00E1 elimina\u010Dn\u00ED reakci za tvorby nov\u00E9 alkenov\u00E9 skupiny. Byly pops\u00E1ny p\u0159\u00EDklady vyu\u017Eit\u00ED Danishefsk\u00E9ho dienu v asymetrick\u00E9 synt\u00E9ze. Byly t\u00E9\u017E pops\u00E1ny deriv\u00E1ty tohoto dienu."@cs . "160"^^ . . "\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\uFF08\u82F1\u8A9E\uFF1ADanishefsky-Diene\uFF09\u662F\u4E00\u79CD\u6709\u673A\u7845\u5316\u5408\u7269\u3002\u5176\u7CFB\u7EDF\u540D\u79F0\u662F\u53CD-1-\u7532\u6C27\u57FA-3-(\u4E09\u7532\u57FA\u7845\u6C27\u57FA)-1,3-\u4E01\u4E8C\u70EF\u3002\u901A\u5E38\u5B83\u4EE5\u5316\u5B66\u5BB6\u585E\u7F2A\u5C14\u00B7\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u7684\u540D\u5B57\u547D\u540D\u3002\u7531\u4E8E\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u7684\u5BCC\u7535\u5B50\u6027\u8D28\uFF0C\u5B83\u975E\u5E38\u5BB9\u6613\u548C\u9A6C\u6765\u9178\u9150\u7B49\u4EB2\u53CC\u70EF\u4F53\u53D1\u751FD-A\u53CD\u5E94\u3002\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u4E2D\u5F97\u7532\u6C27\u57FA\u4E5F\u662F\u4E00\u4E2A\u975E\u5E38\u597D\u7684\u533A\u57DF\u9009\u62E9\u6027\u57FA\u56E2\u3002\u6700\u65E9\uFF0C\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u662F\u901A\u8FC7\u4E09\u7532\u57FA\u6C2F\u7845\u70F7\u548C4-\u7532\u6C27\u57FA-3-\u4E01\u70EF-2-\u916E\u5728\u6C2F\u5316\u950C\u5B58\u5728\u4E0B\u53CD\u5E94\u6765\u5236\u5907\u5F97\u5230\u7684: \u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u6709\u4E24\u5927\u7279\u70B9\uFF1A\u7532\u6C27\u57FA\u548C\u7845\u6C27\u57FA\u4F7F\u5F97\u5B83\u5177\u6709\u975E\u5E38\u9AD8\u7684\u533A\u57DF\u9009\u62E9\u6027: \u5728\u73AF\u52A0\u6210\u53CD\u5E94\u5B8C\u6210\u4E4B\u540E\uFF0C\u8131\u53BB\u7845\u6C27\u57FA\uFF0C\u5373\u53EF\u4EA7\u751F\u70EF\u9187\uFF0C\u70EF\u9187\u5F88\u5BB9\u6613\u5C31\u80FD\u5F02\u6784\u5316\u5F97\u5230\u916E\u3002\u540C\u65F6\uFF0C\u7532\u6C27\u57FA\u4E5F\u53EF\u4EE5\u88AB\u6D88\u53BB\u5F97\u5230\u4E00\u4E2A\u65B0\u7684\u53CC\u952E\u3002"@zh . "\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u30B8\u30A8\u30F3 (Danishefsky's diene) \u306F\u3001trans-1-\u30E1\u30C8\u30AD\u30B7-3-\u30C8\u30EA\u30E1\u30C1\u30EB\u30B7\u30ED\u30AD\u30B7-1,3-\u30D6\u30BF\u30B8\u30A8\u30F3\u69CB\u9020\u3092\u6301\u3064\u30B8\u30A8\u30F3\u306E\u7DCF\u79F0\u3067\u3042\u308B\u3002\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u2013\u5317\u539F\u30B8\u30A8\u30F3\u3068\u3082\u547C\u3070\u308C\u308B\u3002\u03B2-\u30A2\u30EB\u30B3\u30AD\u30B7-\u03B1,\u03B2-\u4E0D\u98FD\u548C\u30B1\u30C8\u30F3\u306E\u30B7\u30EA\u30EB\u30A8\u30CE\u30FC\u30EB\u30A8\u30FC\u30C6\u30EB\u3067\u3042\u308B\u3002 1974\u5E74\u306B\u30B5\u30DF\u30E5\u30A8\u30EB\u30FB\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u3068\u5317\u539F\u6B66\u306B\u3088\u3063\u3066\u5831\u544A\u3055\u308C\u305F\u30022\u3064\u306E\u96FB\u5B50\u4F9B\u4E0E\u6027\u57FA\u3092\u6301\u3064\u305F\u3081\u3001HOMO\uFF08\u6700\u9AD8\u88AB\u5360\u8ECC\u9053\uFF09\u306E\u30A8\u30CD\u30EB\u30AE\u30FC\u6E96\u4F4D\u304C\u9AD8\u3044\u3002\u305D\u306E\u305F\u3081\u3001\u30C7\u30A3\u30FC\u30EB\u30B9\u30FB\u30A2\u30EB\u30C0\u30FC\u53CD\u5FDC\u306B\u304A\u3044\u3066\u975E\u5E38\u306B\u9AD8\u3044\u53CD\u5FDC\u6027\u3092\u6301\u3061\u3001\u96FB\u5B50\u6C42\u5F15\u6027\u57FA\u3092\u6301\u3064\u30B8\u30A8\u30CE\u30D5\u30A3\u30EB\u3068\u5BA4\u6E29\u7A0B\u5EA6\u306E\u6E29\u548C\u306A\u6761\u4EF6\u3067\u3082\u53CD\u5FDC\u3059\u308B\u3002 \u3053\u306E\u53CD\u5FDC\u306E\u751F\u6210\u7269\u306F\u03B2-\u30A2\u30EB\u30B3\u30AD\u30B7\u30B7\u30AF\u30ED\u30D8\u30AD\u30B5\u30CE\u30F3\u306E\u30B7\u30EA\u30EB\u30A8\u30CE\u30FC\u30EB\u30A8\u30FC\u30C6\u30EB\u3067\u3042\u308A\u3001\u3053\u306E\u69CB\u9020\u3092\u8DB3\u304C\u304B\u308A\u3068\u3057\u3066\u3055\u3089\u306B\u5404\u7A2E\u306E\u53CD\u5FDC\u3092\u9069\u7528\u3057\u3066\u5408\u6210\u3092\u884C\u306A\u3046\u3053\u3068\u304C\u53EF\u80FD\u3067\u3042\u308B\u3002\u307E\u305F\u3001\u30A2\u30EB\u30C7\u30D2\u30C9\u306E\u30AB\u30EB\u30DC\u30CB\u30EB\u57FA\u3068\u306E\u30D8\u30C6\u30ED\u30FB\u30C7\u30A3\u30FC\u30EB\u30B9\u30FB\u30A2\u30EB\u30C0\u30FC\u53CD\u5FDC\u306B\u3088\u308A2,3-\u30B8\u30D2\u30C9\u30ED-4H-\u30D4\u30E9\u30F3-4-\u30AA\u30F3\u304C\u5F97\u3089\u308C\u3001\u3053\u306E\u9AA8\u683C\u3092\u6301\u3064\u5316\u5408\u7269\u306E\u5408\u6210\u6CD5\u3068\u3057\u3066\u91CD\u8981\u3067\u3042\u308B\u3002\u305D\u306E\u305F\u3081\u3001\u5404\u7A2E\u306E\u5929\u7136\u7269\u5408\u6210\u306A\u3069\u306B\u5229\u7528\u3055\u308C\u3066\u3044\u308B\u3002 \u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u30B8\u30A8\u30F3\u306F trans-4-\u30E1\u30C8\u30AD\u30B7-3-\u30D6\u30C6\u30F3-2-\u30AA\u30F3\u306B\u5BFE\u3057\u3001\u5869\u5316\u4E9C\u925B\u3068\u30C8\u30EA\u30A8\u30C1\u30EB\u30A2\u30DF\u30F3\u306E\u5B58\u5728\u4E0B\u306B\u30AF\u30ED\u30ED\u30C8\u30EA\u30E1\u30C1\u30EB\u30B7\u30E9\u30F3\u3092\u4F5C\u7528\u3055\u305B\u308B\u3053\u3068\u306B\u3088\u3063\u3066\u5F97\u3089\u308C\u308B\u3002"@ja . . "(E)-1-Methoxy-3-trimethylsilyloxy-buta-1,3-diene"@en . . . . . . . . . . . . "Danishefsky's diene"@en . "1118575002"^^ . . . "9827"^^ . . . "Structural formula of Danishefsky's diene"@en . . . "Kitahara diene"@en . . "Danishefsky-Dien"@de . . . . . "Ball-and-stick model of Danishefsky's diene"@en . . "-1"^^ . . . . . . . . . . . . "\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\uFF08\u82F1\u8A9E\uFF1ADanishefsky-Diene\uFF09\u662F\u4E00\u79CD\u6709\u673A\u7845\u5316\u5408\u7269\u3002\u5176\u7CFB\u7EDF\u540D\u79F0\u662F\u53CD-1-\u7532\u6C27\u57FA-3-(\u4E09\u7532\u57FA\u7845\u6C27\u57FA)-1,3-\u4E01\u4E8C\u70EF\u3002\u901A\u5E38\u5B83\u4EE5\u5316\u5B66\u5BB6\u585E\u7F2A\u5C14\u00B7\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u7684\u540D\u5B57\u547D\u540D\u3002\u7531\u4E8E\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u7684\u5BCC\u7535\u5B50\u6027\u8D28\uFF0C\u5B83\u975E\u5E38\u5BB9\u6613\u548C\u9A6C\u6765\u9178\u9150\u7B49\u4EB2\u53CC\u70EF\u4F53\u53D1\u751FD-A\u53CD\u5E94\u3002\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u4E2D\u5F97\u7532\u6C27\u57FA\u4E5F\u662F\u4E00\u4E2A\u975E\u5E38\u597D\u7684\u533A\u57DF\u9009\u62E9\u6027\u57FA\u56E2\u3002\u6700\u65E9\uFF0C\u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u662F\u901A\u8FC7\u4E09\u7532\u57FA\u6C2F\u7845\u70F7\u548C4-\u7532\u6C27\u57FA-3-\u4E01\u70EF-2-\u916E\u5728\u6C2F\u5316\u950C\u5B58\u5728\u4E0B\u53CD\u5E94\u6765\u5236\u5907\u5F97\u5230\u7684: \u4E39\u5C3C\u8C22\u592B\u65AF\u57FA\u53CC\u70EF\u6709\u4E24\u5927\u7279\u70B9\uFF1A\u7532\u6C27\u57FA\u548C\u7845\u6C27\u57FA\u4F7F\u5F97\u5B83\u5177\u6709\u975E\u5E38\u9AD8\u7684\u533A\u57DF\u9009\u62E9\u6027: \u5728\u73AF\u52A0\u6210\u53CD\u5E94\u5B8C\u6210\u4E4B\u540E\uFF0C\u8131\u53BB\u7845\u6C27\u57FA\uFF0C\u5373\u53EF\u4EA7\u751F\u70EF\u9187\uFF0C\u70EF\u9187\u5F88\u5BB9\u6613\u5C31\u80FD\u5F02\u6784\u5316\u5F97\u5230\u916E\u3002\u540C\u65F6\uFF0C\u7532\u6C27\u57FA\u4E5F\u53EF\u4EE5\u88AB\u6D88\u53BB\u5F97\u5230\u4E00\u4E2A\u65B0\u7684\u53CC\u952E\u3002"@zh . . . . . . . . . . . . . . . . . "Danishefsk\u00E9ho dien"@cs . . "Danishefsk\u00E9ho dien (tak\u00E9 naz\u00FDvan\u00FD Kitahar\u016Fv dien, systematick\u00FD n\u00E1zev trans-1-methoxy-3-trimethylsilyloxybuta-1,3-dien) je organick\u00E1 slou\u010Denina k\u0159em\u00EDku pat\u0159\u00EDc\u00ED mezi dieny; objevil ji , po kter\u00E9m je tak\u00E9 pojmenov\u00E1na. Jeliko\u017E m\u00E1 dien vysokou elektronovou hustotu, tak je zna\u010Dn\u011B reaktivn\u00ED p\u0159i Dielsov\u00FDch\u2013Alderov\u00FDch reakc\u00EDch. Prudce reaguje s elektrofiln\u00EDmi alkeny jako je maleinanhydrid. D\u00EDky methoxyskupin\u011B jsou adice velmi regioselektivn\u00ED. Tato l\u00E1tka reaguje s aminy, aldehydy, alkeny a alkyny. Byly tak\u00E9 pops\u00E1ny jej\u00ED reakce s iminy a nitroalkeny. Danishefsk\u00E9ho dien"@cs . "\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u30B8\u30A8\u30F3 (Danishefsky's diene) \u306F\u3001trans-1-\u30E1\u30C8\u30AD\u30B7-3-\u30C8\u30EA\u30E1\u30C1\u30EB\u30B7\u30ED\u30AD\u30B7-1,3-\u30D6\u30BF\u30B8\u30A8\u30F3\u69CB\u9020\u3092\u6301\u3064\u30B8\u30A8\u30F3\u306E\u7DCF\u79F0\u3067\u3042\u308B\u3002\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u2013\u5317\u539F\u30B8\u30A8\u30F3\u3068\u3082\u547C\u3070\u308C\u308B\u3002\u03B2-\u30A2\u30EB\u30B3\u30AD\u30B7-\u03B1,\u03B2-\u4E0D\u98FD\u548C\u30B1\u30C8\u30F3\u306E\u30B7\u30EA\u30EB\u30A8\u30CE\u30FC\u30EB\u30A8\u30FC\u30C6\u30EB\u3067\u3042\u308B\u3002 1974\u5E74\u306B\u30B5\u30DF\u30E5\u30A8\u30EB\u30FB\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u3068\u5317\u539F\u6B66\u306B\u3088\u3063\u3066\u5831\u544A\u3055\u308C\u305F\u30022\u3064\u306E\u96FB\u5B50\u4F9B\u4E0E\u6027\u57FA\u3092\u6301\u3064\u305F\u3081\u3001HOMO\uFF08\u6700\u9AD8\u88AB\u5360\u8ECC\u9053\uFF09\u306E\u30A8\u30CD\u30EB\u30AE\u30FC\u6E96\u4F4D\u304C\u9AD8\u3044\u3002\u305D\u306E\u305F\u3081\u3001\u30C7\u30A3\u30FC\u30EB\u30B9\u30FB\u30A2\u30EB\u30C0\u30FC\u53CD\u5FDC\u306B\u304A\u3044\u3066\u975E\u5E38\u306B\u9AD8\u3044\u53CD\u5FDC\u6027\u3092\u6301\u3061\u3001\u96FB\u5B50\u6C42\u5F15\u6027\u57FA\u3092\u6301\u3064\u30B8\u30A8\u30CE\u30D5\u30A3\u30EB\u3068\u5BA4\u6E29\u7A0B\u5EA6\u306E\u6E29\u548C\u306A\u6761\u4EF6\u3067\u3082\u53CD\u5FDC\u3059\u308B\u3002 \u3053\u306E\u53CD\u5FDC\u306E\u751F\u6210\u7269\u306F\u03B2-\u30A2\u30EB\u30B3\u30AD\u30B7\u30B7\u30AF\u30ED\u30D8\u30AD\u30B5\u30CE\u30F3\u306E\u30B7\u30EA\u30EB\u30A8\u30CE\u30FC\u30EB\u30A8\u30FC\u30C6\u30EB\u3067\u3042\u308A\u3001\u3053\u306E\u69CB\u9020\u3092\u8DB3\u304C\u304B\u308A\u3068\u3057\u3066\u3055\u3089\u306B\u5404\u7A2E\u306E\u53CD\u5FDC\u3092\u9069\u7528\u3057\u3066\u5408\u6210\u3092\u884C\u306A\u3046\u3053\u3068\u304C\u53EF\u80FD\u3067\u3042\u308B\u3002\u307E\u305F\u3001\u30A2\u30EB\u30C7\u30D2\u30C9\u306E\u30AB\u30EB\u30DC\u30CB\u30EB\u57FA\u3068\u306E\u30D8\u30C6\u30ED\u30FB\u30C7\u30A3\u30FC\u30EB\u30B9\u30FB\u30A2\u30EB\u30C0\u30FC\u53CD\u5FDC\u306B\u3088\u308A2,3-\u30B8\u30D2\u30C9\u30ED-4H-\u30D4\u30E9\u30F3-4-\u30AA\u30F3\u304C\u5F97\u3089\u308C\u3001\u3053\u306E\u9AA8\u683C\u3092\u6301\u3064\u5316\u5408\u7269\u306E\u5408\u6210\u6CD5\u3068\u3057\u3066\u91CD\u8981\u3067\u3042\u308B\u3002\u305D\u306E\u305F\u3081\u3001\u5404\u7A2E\u306E\u5929\u7136\u7269\u5408\u6210\u306A\u3069\u306B\u5229\u7528\u3055\u308C\u3066\u3044\u308B\u3002 \u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u30B8\u30A8\u30F3\u306F trans-4-\u30E1\u30C8\u30AD\u30B7-3-\u30D6\u30C6\u30F3-2-\u30AA\u30F3\u306B\u5BFE\u3057\u3001\u5869\u5316\u4E9C\u925B\u3068\u30C8\u30EA\u30A8\u30C1\u30EB\u30A2\u30DF\u30F3\u306E\u5B58\u5728\u4E0B\u306B\u30AF\u30ED\u30ED\u30C8\u30EA\u30E1\u30C1\u30EB\u30B7\u30E9\u30F3\u3092\u4F5C\u7528\u3055\u305B\u308B\u3053\u3068\u306B\u3088\u3063\u3066\u5F97\u3089\u308C\u308B\u3002"@ja . "trans-1-Methoxy-3-trimethylsilyloxy-buta-1,3-diene"@en . . . . . "\u30C0\u30CB\u30B7\u30A7\u30D5\u30B9\u30AD\u30FC\u30B8\u30A8\u30F3"@ja . "{[(3E)-4-Methoxybuta-1,3-dien-2-yl]oxy}trimethylsilane"@en . . . . "changed"@en . . . . . . "Diene di Danishefsky"@it . . . "Danishefsky-Diene Structural Formulae.png"@en . "Il diene di Danishefsky (conosciuto anche come \"diene di Kitahara\") \u00E8 un composto di col nome formale di trans-1-metossi-3-trimetilsililossi-1,3-butadiene e prende il nome dal chimico . Essendo un diene molto elettron ricco \u00E8 un reagente versatile e molto reattivo nella reazione di Diels-Alder. Reagisce infatti rapidamente con alcheni elettrofili, come l'anidride maleica, ed il gruppo metossi al suo interno promuove addizioni molto regioselettive. Si conosce la sua reattivit\u00E0 con ammine, aldeidi, alcheni ed alchini. Le sue reazione con immine e sono state parimenti riportate in letteratura. Venne sintetizzato per la prima volta per reazione tra e 4-metossi-3-buten-2-one e cloruro di zinco, quindi \u00E8 stato fatto reagire con l'anidride maleica: Danishefsky\u2019s diene Questo diene ha due aspetti interessanti: i sostituenti promuovono addizione regiospecifica verso dienofili asimmetrici e l'addotto risultante \u00E8 favorevole ad ulteriori manipolazioni dei gruppi funzionali presenti. Tipicamente si ottiene una alta regioselettivit\u00E0 per reazione con alcheni asimmetrici evidenziando una forte preferenza per la relazione 1,2 tra il gruppo metossi ed il carbonio pi\u00F9 elettron-povero dell'alchene, come in questo esempio di reazione con una immina: Danishefsky\u2019s diene in Aza-Diels_Alder In questa reazione il metossi viene eliminato portando alla formazione di un . Si pu\u00F2 considerare quindi che il silil etere sia un sintone per il gruppo carbonilico. Sono state riportate molte applicazioni nella sintesi asimmetrica. Viene inoltre riportato l'uso di derivati fluorinati."@it . "Danishefsky's diene (Kitahara diene) is an organosilicon compound and a diene with the formal name trans-1-methoxy-3-trimethylsilyloxy-buta-1,3-diene named after Samuel J. Danishefsky. Because the diene is very electron-rich it is a very reactive reagent in Diels-Alder reactions. This diene reacts rapidly with electrophilic alkenes, such as maleic anhydride. The methoxy group promotes highly regioselective additions. The diene is known to react with amines, aldehydes, alkenes and alkynes. Reactions with imines and nitro-olefins have been reported. It was first synthesized by the reaction of trimethylsilyl chloride with 4-methoxy-3-buten-2-one and zinc chloride: The diene has two features of interest: the substituents promote regiospecific addition to unsymmetrical dienophiles and the resulting adduct is amenable to further functional group manipulations after the addition reaction. High regioselectivity is obtained with unsymmetrical alkenes with a preference for a 1,2-relation of the ether group with the electron-deficient alkene-carbon. All this is exemplified in this aza Diels-Alder reaction: In the cycloaddition product, the silyl ether is a synthon for a carbonyl group through the enol. The methoxy group is susceptible to an elimination reaction enabling the formation of a new alkene group. Applications in asymmetric synthesis have been reported. Derivatives have been reported."@en . . . "\u4E39\u5C3C\u8B1D\u592B\u65AF\u57FA\u96D9\u70EF"@zh . . . . "Danishefsky's diene 3D ball.png"@en . . . "445159268"^^ . . "Das Danishefsky-Dien (nach Samuel Danishefsky) ist eine chemische Verbindung aus der Stoffklasse der Diene. Es besitzt das Grundger\u00FCst des 1,3-Butadiens, das in der 1-Position eine Methoxygruppe und in der 3-Position einen Trimethylsilylether besitzt."@de . "Das Danishefsky-Dien (nach Samuel Danishefsky) ist eine chemische Verbindung aus der Stoffklasse der Diene. Es besitzt das Grundger\u00FCst des 1,3-Butadiens, das in der 1-Position eine Methoxygruppe und in der 3-Position einen Trimethylsilylether besitzt."@de . "180"^^ . "Il diene di Danishefsky (conosciuto anche come \"diene di Kitahara\") \u00E8 un composto di col nome formale di trans-1-metossi-3-trimetilsililossi-1,3-butadiene e prende il nome dal chimico . Essendo un diene molto elettron ricco \u00E8 un reagente versatile e molto reattivo nella reazione di Diels-Alder. Reagisce infatti rapidamente con alcheni elettrofili, come l'anidride maleica, ed il gruppo metossi al suo interno promuove addizioni molto regioselettive. Si conosce la sua reattivit\u00E0 con ammine, aldeidi, alcheni ed alchini. Le sue reazione con immine e sono state parimenti riportate in letteratura."@it . . . . "Kitahara diene"@en . . . . "trans-1-Methoxy-3-trimethylsilyloxy-buta-1,3-diene"@en . . . .